This message was posted on behalf of Intel Corporation
Intel does not test and validate Intel® NUC on Linux; however, we know that a lot of NUC owners are using it successfully on many different Linux distros. I recommend visiting the Ubuntu community for more feedback from peer to peer; Community support | Ubuntu
Here you can check the supported operating systems and the customer-reported operating systems; Supported Operating Systems for Intel® NUC Products. You will find that Ubuntu is one of the customer-reported OS for the NUC6i7KYK.